Over the next few weeks we are taking an exploration of myotherapy and it’s modalities. Today, we’re looking at TENS.
What is TENS?
TENS stands for Transcutaneous electrical nerve stimulation, and is a method of pain relief involving the use of a mild electrical current. The electrical current is delivered by a small device. Sticky pad electrodes stick on the skin and deliver a mild electric current between them, through the muscles and connective tissue.
How does TENS work?
It is thought that the electrical impulses from TENS can reduce the pain signals going to the spinal cord and brain. This may help relieve pain and relax the muscle tissue. They may also stimulate the production of endorphins, which are the body’s natural painkillers.
Unfortunately there has been little study on how TENS works.
People who use it frequently may develop a tolerance to the treatment and should therefore use low and high frequencies within treatments.
What can I use TENS on?
TENS can be used for many pain conditions such as arthritis, period pain and endometriosis, labour pain, postoperative pain, multiple sclerosis, muscular and neural conditions. Conditions such as sciatica, tennis elbow, plantar fasciitis, Achilles tendonitis and various other musculoskeletal conditions respond well with the TENS.
When shouldn’t I use TENS?
A TENS machine shouldn’t be used over metal implants, pins or staples. If you have a pace maker or heart problems. The TENS should not be placed from front to back of the torso, across the neck, or head where the current can run through organs. It should not be placed on the abdomen of pregnant women. It’s not recommended for use on the face.
The electrodes should also not be placed over wounds or skin conditions.
Where should the electrodes go?
General rule is to place the electrodes above and below the area of pain. However, there are many resources on electrode placement, particularly for neural pain and placement in alignment with acupuncture points.
When will my myotherapist suggest TENS?
Your myotherapist may suggest using the TENS when your muscles are in spasm or a hypertensive state where deep tissue massage, trigger point therapy or other intensive treatment may make your condition worse. TENS may be used if you have a low pain tolerance or are particularly sensitive. Or if the muscle tissues are not responding to other types of treatment.
Generally it is a good option early on, when you are in an acute stage of injury, as it is a gentle and relaxing but therapeutic treatment.
Your myotherapist may suggest you get your own device to perform self treatment at home between visits. Simple TENS machines are readily available, easy and safe to use at home. Your myotherapist should also be able to help you learn how to use it or set it up for you.
